C/ctype.h/isupper
int isupper(int ch)
<source lang="cpp">
//Declaration: int isupper(int ch); //Return: returns nonzero if ch is an uppercase letter;
otherwise zero is returned. #include <ctype.h> #include <stdio.h> int main(void) { char ch; for(;;) { ch = getchar(); if(ch == "."){ break; } if(isupper(ch)){ printf("%c is uppercase\n", ch); } } return 0; }
/* d s a w C C is uppercase .
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